Prediction of absorbance from reflectance for an absorbing-scattering fabric

Shérif, M. El; Bayoumi, O. A.; Sokkar, T.Z.N.

doi:10.1002/(sici)1520-6378(199702)22:1<32::aid-col6>3.0.co;2-5

Cited by 22 publications

(22 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, we used diffuse reflectance measurements to verify the appearance of the SPR band. With this measurement it is possible to relate the absorption coefficient (K) to the reflectance (R) through Kubelka-Munk function 2 / = (1-) / 2 K S R R,where S is the scattering coefficient [26].A comparison between the K/S spectrum of the as-prepared sample (curve A) with the one obtained for the irradiated area after heat treatment at 570°C for 1h (curve B) is shown in Fig. 3.…”

Section: Resultsmentioning

confidence: 99%

Generation of copper nanoparticles induced by fs-laser irradiation in borosilicate glass

Almeida¹,

Boni²,

Avansi³

et al. 2012

Opt. Express

View full text Add to dashboard Cite

Glasses containing metallic nanoparticles are promising materials for technological applications in optics and photonics. Although several methods are available to generate nanoparticles in glass, only femtosecond lasers allow controlling it three-dimensionally. In this direction, the present work investigates the generation of copper nanoparticles on the surface and in the bulk of a borosilicate glass by fslaser irradiation. We verified the formation of copper nanoparticles, after heat treatment, by UV-Vis absorption, transmission electron microscopy and electron diffraction. A preferential growth of copper nanoparticles was observed in the bottom of the irradiated region, which was attributed to self-focusing in the glass. in borosilicate glasses using ultrafast laser irradiation," J. ©2012 Optical Society of America

show abstract

Section: Resultsmentioning

confidence: 99%

Generation of copper nanoparticles induced by fs-laser irradiation in borosilicate glass

Almeida¹,

Boni²,

Avansi³

et al. 2012

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Konica Minolta CM-700d Spectrophotometer (Standard illuminant D 65 ) was used to measure L*, a*, b* color coordinates. Diffuse reflectance data in the visible range were measured using a homemade UV-VIS spectrophotometer (MgO as the reference) and converted to absorbance using the Kubelka-Munk equation [51]. Near-infrared reflectance data (up to 2500 nm) were collected using a Jasco V-670 Spectrophotometer.…”

Section: Methodsmentioning

confidence: 99%

Intense turquoise colors of apatite-type compounds with Mn5+ in tetrahedral coordination

Medina

Stalick

et al. 2016

Solid State Sciences

View full text Add to dashboard Cite

The solid solutions of chlorapatite compounds Ba 5 Mn 3-x V x O 12 Cl (x = 0-3.0) and Ba 5 Mn 3x P x O 12 Cl (x = 0-3.0) have been synthesized through solid state reactions and Pechini or sol-gel method using citric acid. The colors of the samples change from white (x = 3.0) through turquoise (x = 1.5) to dark green (x = 0) with increasing amount of manganese. Optical measurements reveal that the origin of the color is presumably a combination of d-d transitions of Mn 5+ and cation-anion charge transfer from transition metals to oxygens. Near IR reflectance measurements indicate that synthesized compounds are promising materials for "cool pigments" applications. Magnetic measurements verify that manganese has two unpaired electrons and exhibits 5+ oxidation state. The IR spectra change systematically with sample compositions and the fingerprint region (700 cm-1 to 1100 cm-1) indicates characteristic bands belonging to (MnO 4) 3-, (VO 4) 3and (PO 4) 3functional groups. Structure refinements using neutron data confirm that Mn 5+ , V 5+ and P 5+ cations occupy the tetrahedral sites in the apatite structure.

show abstract

“…where the reflectance R is substituted with R ∞ (R = R ∞ ), as the textile is considered an opaque material (Kubelka and Munk, 1931;El Sherif et al, 1997;Berns and Mohammadi, 2007;Džimbeg-Malčić et al, 2011;Sadeghi-Kiakhani and Safapour, 2015).…”

Section: Characterizationmentioning

confidence: 99%

Surface Functionalization of Cotton Fabrics by Photo-Grafting for pH Sensing Applications

et al. 2020

View full text Add to dashboard Cite

This paper investigates the photo-grafting of a halochromic molecule on cotton fabric surfaces. Nitrazine yellow (NY) dye was modified with a methacrylate moiety (GMA) obtaining a photo-reactive dye (GMA-NY), which was covalently grafted onto the cellulosic substrate by means of UV irradiation. The photo-grafting reaction was studied by FT-IR spectroscopy, while the pH response of the functionalized fabric was evaluated at different pH conditions (i.e., acidic and alkaline conditions) both in wet and vapor environments by spectrophotometric analyses. The results showed that the photografting of the modified dye onto the fabric was successful: treated cotton clearly changed color when subjected to different pH. It was thus demonstrated that the GMA-NY dye, photo-grafted on cotton, can successfully impart pH sensing properties to the fabric, which can therefore find numerous applications in the area of smart textiles.

show abstract

Prediction of absorbance from reflectance for an absorbing-scattering fabric

Cited by 22 publications

References 1 publication

Generation of copper nanoparticles induced by fs-laser irradiation in borosilicate glass

Generation of copper nanoparticles induced by fs-laser irradiation in borosilicate glass

Intense turquoise colors of apatite-type compounds with Mn5+ in tetrahedral coordination

Surface Functionalization of Cotton Fabrics by Photo-Grafting for pH Sensing Applications

Contact Info

Product

Resources

About